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Environment

- Milvus version:2.6.4
- Deployment mode(standalone or cluster): cluster
- MQ type(rocksmq, pulsar or kafka):    pulsar
- SDK version(e.g. pymilvus v2.0.0rc2):
- OS(Ubuntu or CentOS): Ubuntu 
- CPU/Memory: CPU
- GPU: 
- Others:

Current Behavior

AiSAQ index type consumes less RAM usage while loading the index than DISKANN, and the query node module is missing the implementation of the RAM usage estimation for that AiSAQ index type.

An exact code PR regarding that issue was requested (#45246).

Expected Behavior

We suggest that the AiSAQ RAM usage estimation calculation should be as follows:

UsedDiskMemoryRatioAisaq = 1024 (contrary to the UsedDiskMemoryRati,o which is 4)
neededMemSize = indexInfo.IndexSize / UsedDiskMemoryRatioAisaq
neededDiskSize = indexInfo.IndexSize

Steps To Reproduce

Milvus Log

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Anything else?

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